Method of applying tinting liquid and product thereof



Patented Jan. 5, 1932 UNITED ST ES PATENT OFFICE HERBERT PLATT AND WILLIAM WHITEHEAD, F CUMBERLAND, MARYLAND, AND FREDERICK J. WILLIAMS, 0]? METUGHEN, NEW JERSEY, ASSIGNORS TO CELANESE CORPORATION OF AMERICA, A CORPORATION OF DELAWARE METHOD OF APPLYING TIN TING LIQUID AND PRODUCT THEREOF No Drawing." Original application filed March 27, 1928, Serial No. 265,221. Divided and this application filed February 1, 1930. Serial No. 425,350.

This invention relates to a tinting fluid and method of using the same for temporarily marking yarns during their processing.

This a plication is a division of our application erial No. 265,221 filed March 27, 1928.

An object of our invention is to provide a fluid for the fugitive tinting of textile yarns for the purpose of identification of the same.

k A further object'of our invention is to provide a tinting fluid for the temporary marking of yarns, which tinting fluid may be applied to the yarns while the same are running to a bobbin or other packaging device. Further objects of our invention will appear from the following detailed description. 7

His a .common practice in the textile art to color yarns with an easily removable dye for the purpose of identifying them as to denier, count or size, twist, number of filaments, etc., during textile operations. After a finished product is produced, the color is removed by washing or scouring. Ordinarily simple aqueous solutions of acid dyes (sodium salts of sulfonic acids) are used for this purpose. Usually the yarn is banked and immersed in an aqueous solution of the fugitive dye. However, this method involves the additional operations of hanking and swift winding and the extra expense and waste entailed by these operations. If attempt is made to apply the fugitive tinting liquid by means of a wick or roller to yarns made of certain materials, and especially to cellulose acetate yarns, while they are running from bobbin to bobbin, poor results are obtained, due to the fact that the yarns retain too large a percentage of water, causing the stretching of yarns when of necessity high tensions are employed, and in all cases where excessive moisture is applied while winding, subsequent loss of the moisture by evaporation, brings about an undesirable softening or slackness of the package of the yarn wound.

- We have found that by using a vegetable, I 7 animal or mineral oil in the fugitive tinting fluid, the same may be applied to the yarn while it is running from bobbin to bobbin, without causing the undesirable results set forth above;

In accordance with our invention, we prepare a tinting fluid which contains water, a'

bobbin by means of a wick or roller. Any

suitable sulfonated oil such as Turkey red oil (sulfonated castor oil) or sulfonated olive oil may be used, but sulfonated olive oil is preferred, since this has the least tendency to leave sticky deposits on the apparatus with which the yarn comes in contact.

Of the non drying oils that may be used, the non drying mineral oils, animal oils or vegetable oils are preferred. We have obtained very satisfactory results with the use of a mineral oil such as pariflin or parafiin oil. As an example of an animal oil, neatsfoot oil may be mentioned. Of the vegetable oils castor oil or cotton seed oil may be used. However, we have found that the use of olive oil gives the best results.

The dyestuff that is used may be any suitable dye that produces fugitive tintin on the particular yarn that is to be. identified, and which may be readily removed.

The proportion of various ingredients that are used may be varied within wide limits. However, we prefer a tinting fluid of such composition that when the same is applied to the yarn during its passage to a winding and/0r twisting apparatus, the yarndoes not retain more than the total of about 8% of its of tinting fluid necessary to obtain a desired deposition of oil and water on the yarn, may be readily ascertained for the varidus linear speeds of the yarn. l

'The proportion of oil, sulfonated oil and water may be varied within wide limits. Thus, 100 parts of the tinting fluid may be made up of from to 50 parts of a-mixture of non drying oil and sulfonated oil, from- 89 to 49 parts of water and substantially 1 part of concentrated fugitive dye or tint.

The mixture of oil and sulfonated oil may be Varied Within wide limits say, from 3 to 7 parts of sulfonated oil to 1 part'of unsulfonated oil. The amount of fugitive dyestufl maybe Varied in accordance with the nature of the dyes, the depth of tinting desired, the

, nature of the yarn to be identified, and the amount of tinting fluid applied. For example, 0.5 to 1.0% of dye is suitable for the purpose of identifying yarn in the bobbin,

hank or other package. For identifying in-" I dividual ends in warping, weaving and similar processes, a concentration of about 4% or over of the dye in the tinting fluid is advisable. i r

Q The tinting fluid may be applied in any suitable manner such as by immersion of the hanks in the tinting fluidby a roller or by a ,wick or pad. However, since the greatestv advantages accruing from the use of our tinting fluid is obtained by applying the same to yarn while it is running from one textile mawithout difliculty.

' includes not, only the literal meaning of bobinvention is used in connection with-the dry orifices of a spinne-rretin' a'metier. or a dry sp nning machine into a heated atmosphere bin but also includes cones, cheeses, hanks, pirns and other textile phckages. The expression also includes the tinting of artificial yarns after their formation, but prior to their being twisted 'and/or'wound. For instance, in the manufacture of cellulose acetate yarn by the dry spinning process, a solution of cellulose acetate in appropriatevolatile solventsuch as acetone, ispassed through the andthe filaments thus formed are drawn and wound and/or twisted onto an appropriate bobbin or cap-spinning machine. When the tinting fluid made in accordance with our spinning process, the fluid is applied to the I filaments or yarns on the metier or dry spinning machine justafter their exit from the metier casing and just prior to their being I twisted and/or wound.

The yarn that may be tinted in accordance with our invention may be of any nature. While this invention presents. great advantages in the fugitive tinting of yarns cont-aining organic derivatives of cellulose such as cellulose acetate, cellulose formate, cellulose butyrate and cellulose propionate, ethyl cellulose, methyl cellulose and benzyl cellulose, it may be applied to yarns of other fibres such as silk, wool, cotton, reconstituted cellulose Ell) (rayon) flax or composite yarns containing mixtures of these fibres. This invention, however, is particularly applicable to the tinting of cellulose acetate, yarns.

In order to further'illustrate our invention the following specific examples of tinting fluid are given Example if i A mixture of olive oil and sulfonated olive oil having the following constitution is used:

Per cent Total oils and fatty acids; 56 Unsulfonated oil a 11 The tinting fluid maybe made up as follows i arts . P Mixture of olive oil and sulfonated olive oil 40 Water 59 Fugitive red tint (concentrated) 1 The fugitive tint thus made is a clear solution.

Ewe mp2s I I Using the same mixture of olive oil'and sulfonated olive oil described in Example I, a tinting fluid is made as follows I l 7 r t Mixed olive oil and sulfonated olive oiL- lt: Water m 86 Fugitive tint (concentrated) 1 When either of the above tinting fluids is applied to a yarn containing cellulose acetate,

while being Wound from bobbin to bobbin, the yarn is found to'be evenly tinted, the yarn is well lubricated and has a soft handle. Since the tinting fluid made in accordance with our invention also lubricatesthe yarn, the yarn treated therewith can be easily worked in textile machines, such as knitting vmachines,since the yarn is simultaneously tinted and lubricated. The packages thus produced are good and not soft, as would be produced by using a mere aqueous solution of the. fugitive tint. The fugitive dyeing thus produced is I readily removable, in fact somewhat more so than when I the former tinting fluids are used, and the dyeing properties of the cellulose acetate yarn are not affected. By the use of the fugitive afugitive dyestufi,

tinting fluid on the cellulose acetate yarn while they are running from bobbin to bobbin, such operations as painting of the packages, dipping of the packages and the expensive method of tinting in the skein form are avoided. i

It is to be understood that the foregoing details are given merely by way of illustration and that many variations may be made therein without departing from the spirit of this invention. v

Having described our invention what we claim and desire to secure by Letters Patent 1s plying thereto a tinting fluid containing a fugitive vdyes'tuif, a non-drying oil and a sulfonated oil.

2. Method of tinting yarns comprising applying to said bobbin to bobbin a tinting fluid containing I a fugitivedyestufi, a non-dryingoil and a 'sulfonated oil.

3. Method of tinting yarns comprising applying to said yarns while in transit from bobbin to bobbin a tinting fluid containing a fugitive dyestufl', a non-drying vegetable oil and a sulfonated vegetable oil.

4. Method of tinting yarns comprising applying to said yarns while in transit from bobbin to bobbina tinting fluid containing olive oil and a sulfonated 5. Method of tinting yarns comprising applying to said yarns bobbin to bobbin :1 tinting fluid containing aiugitive dyestufi, castor oil and a sulfonated o1 6. Method of tinting yarns comprising applying to said yarns while in transit from bobbin to bobbin 9. tinting fluid containing a fugitive dyestufl, paraflin oil and a sulfonated oil.

. 7. Method of tinting yarns comprising applying to said yarns while in transit from bobbin to bobbin a tinting fluid containing a fugitive dyestufl, olive oil and a sulfonated olive oil.

8. Method in accordance with claim 2 wherein the yarn to be tinted contains organic derivatives of cellulose.

9. Method in accordance with claim 2 wherein the yarn to be tinted contains cellulose acetate.

10. Method in accordance with claim 4 wherein the yarn to betinted contains cellulose acetate.

11. Method in accordance with claim 7 wherein the yarn to be tinted contains cellulose acetate.

12. Yarns tinted with a fugitive tinting fluid containing a sulfonated oil.

13. Yarns tinted with a fugitive tinting fluid containing a non-drying oil and a sulfonated oil.

yarns while in transit from K while in transit from.

1. Method of tinting yarns comprising ap- 

